Vulnerability Description
Firebird is a relational database. Prior to snapshot versions 4.0.6.3183, 5.0.2.1610, and 6.0.0.609, Firebird is vulnerable if ExtConnPoolSize is not set equal to 0. If connections stored in ExtConnPool are not verified for presence and suitability of the CryptCallback interface is used when created versus what is available could result in a segfault in the server process. Encrypted databases, accessed by execute statement on external, may be accessed later by an attachment missing a key to that database. In a case when execute statement are chained, segfault may happen. Additionally, the segfault may affect unencrypted databases. This issue has been patched in snapshot versions 4.0.6.3183, 5.0.2.1610, and 6.0.0.609 and point releases 4.0.6 and 5.0.2. A workaround for this issue involves setting ExtConnPoolSize equal to 0 in firebird.conf.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Firebirdsql | Firebird | >= 4.0.0, < 4.0.6 |
Related Weaknesses (CWE)
References
- https://github.com/FirebirdSQL/firebird/commit/658abd20449f72097fbbce57e8e6ae42fPatch
- https://github.com/FirebirdSQL/firebird/issues/8429Issue Tracking
- https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-fx9r-rj68-7p69MitigationVendor Advisory
- https://www.vicarius.io/vsociety/posts/cve-2025-24975-detect-vulnerable-firebirdExploitThird Party Advisory
- https://www.vicarius.io/vsociety/posts/cve-2025-24975-mitigate-firebird-vulnerabExploitThird Party Advisory
FAQ
What is CVE-2025-24975?
CVE-2025-24975 is a vulnerability with a CVSS score of 7.1 (HIGH). Firebird is a relational database. Prior to snapshot versions 4.0.6.3183, 5.0.2.1610, and 6.0.0.609, Firebird is vulnerable if ExtConnPoolSize is not set equal to 0. If connections stored in ExtConnPo...
How severe is CVE-2025-24975?
CVE-2025-24975 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-24975?
Check the references section above for vendor advisories and patch information. Affected products include: Firebirdsql Firebird.